I'm a big fan of Domain-Driven Design. But I think "before the coding starts" is a bad way to look at it. To be ready for a week's worth of coding, all we need

I'm a big fan of Domain-Driven Design. But I think "before the coding starts" is a bad way to look at it. To be ready for a week's worth of coding, all we need is either a small amount of stuff we're sure about or something that we can learn about via shipping something. Delaying for perfect knowledge is a very dangerous habit to get into, so I'd rather avoid it entirely.